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A method for predicting the timing of mechanical equipment remanufacturing

A technology of mechanical equipment and prediction method, applied in the field of remanufacturing, can solve problems such as increasing the complexity of optimization control of remanufacturing systems, and achieve the effects of maximizing benefits, saving remanufacturing costs, and extending service life

Active Publication Date: 2022-04-26
CHANGAN UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

These factors greatly increase the complexity of optimal control of remanufacturing systems

Method used

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  • A method for predicting the timing of mechanical equipment remanufacturing
  • A method for predicting the timing of mechanical equipment remanufacturing
  • A method for predicting the timing of mechanical equipment remanufacturing

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Embodiment Construction

[0042] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0043] Waste equipment will inevitably fail during service. In the later period of product service, due to the coupling effect of fatigue, wear, corrosion and other failure forms, the frequency of product failure increases, and the number of maintenance and maintenance costs also gradually increase. Choosing the right timing is very critical to repairing and improving the remanufacturing performance of the product. The present invention uses the remanufacturing timing prediction of the two-parameter Weibull distribution to recycle and remanufacture the waste equipment at an appropriate timing.

[0044] see figure 1 According to the bathtub curve, the study found that the performance curve of the product roughly obeys the "bathtub curve" during the service process. From the service time of the product into the third stage of the bathtub curve, the product perf...

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Abstract

The invention relates to a method for predicting the remanufacturing opportunity of mechanical equipment. The failure time of several parts in the mechanical equipment is firstly obtained as sample data, and the median rank method is used to estimate the cumulative failure probability; the least square method is used for parameter fitting to obtain the cumulative failure time The relationship expression of probability and reliability; using the relationship expression of cumulative failure probability and reliability and the reliability expression of two-parameter Weibull distribution, the solution formula of two-parameter Weibull failure rate h(t) is obtained; using h( The formula for solving t) is to solve N(t) according to the formula; construct a remanufacturing timing decision model, substitute N(t) into the remanufacturing timing decision model, and solve the theoretical remanufacturing timing T d ;Compared with theoretical remanufacturing timing T d and recovery time T after mechanical equipment failure b The size determines the timing of mechanical equipment remanufacturing. The invention can reliably predict the timing of remanufacturing, control the failure degree of waste products, and save remanufacturing costs.

Description

technical field [0001] The invention relates to the field of remanufacturing, in particular to a method for predicting remanufacturing opportunities of mechanical equipment. Background technique [0002] Green remanufacturing, as an important part of net recycling, has always attracted the attention of scholars at home and abroad. Remanufacturing is defined as: Remanufacturing (Remanufacture) takes the damaged or about to be scrapped complete machine or parts as the processing object. In the performance failure analysis On the basis of remanufacturability assessment, such as remaining life assessment, a series of advanced remanufacturing engineering technologies are used to implement high-tech repair and transformation of waste products, so that the quality of remanufactured products can reach or even exceed the process of new products. Remanufacturing is an innovative development of maintenance, and it is a new industrial field that is crossed, integrated and optimized in t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/04G06Q50/04
CPCG06Q10/04G06Q50/04Y02P90/30
Inventor 蔡宗琰张丹刘清涛张野
Owner CHANGAN UNIV
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